Oil-derrick anchor



wm m Sept. 2, 1928..

G. B. MULLIEN OIL DERRICK ANCHOR Filed May 17, 1926 F/Efi.

GEORGE B. MULLER, 01E STRDUD, OKLAHOMA.

OIL-DERRICK ANCHOR.

Application filed May 17, 1926. Serial No. 109,686.

' The present invention relates to derricks such as used in. drillingoil and other deep wells, and the object of the invention is theprovision of simple and effective means for anchoring the derrickstructure securely to the foundation or base, to prevent the derrickfrom being blown over by strong winds, and to render the structure moresubstantial.

With the foregoing and other objects in View, which will be apparent asthe description proceeds, the invention resides in the construction andarrangement of parts as hereinafter described and claimed, it beingunderstood that changes can be made within the scope of what is claimed,without depart ing from the spirit of the invention.

The invention is illustrated in the accompanying drawing, wherein--lligure 1 is a perspective view in diagram 21) of a derrick with theimprovements incorporated there-in.

Fig. 2 is an enlarged fragmentary detail view.

The improvements may be used in any oil or deep well derrick of theprevailing eonstructions used, some being made of metal and others ofwood. The ordinary derrick coinprises the four corner legs 7 convergingupwardly and connected by horizontal and inclined braces 8, to provide askeleton frame which tapers upwardly. The derrick is supported on asuitable foundation or base, which may be concrete sleepers 9 as shown.

In carrying out the invention, guy wires 10 and 11 are disposed at allfour sides of the derrick, and have their upper ends looped or otherwiseengaged around the legs 7, as at 17, at vertically spaced points, or atdifferent vertical heights of the derrick. The loops l7 embrace the legsat points immediately above the corresponding braces 8, so that saidbraces prevent the loops from sliding downwardly on the legs, and thestrains are thus applied to the legs at the junctures thereof with thebraces. The wires 10 are connected to the derrick at a. higher pointthan the wires 11, and there are two wires 10 and two wires 11 at eachside of the derrick, said wires crossing one another and be ing disposedin substantially the plane of the corresponding side of the derrick. Thelower lllll portions of the wires 10 and 11 of each pair are connectedto the eye 12 of a rod 13, and, as shown, the wires 10 and 11 may beconnected together and loop-ed through the eye 12, to equalize thetension on the two wires when they are tightened. The rods 18 areconnected by turnbuckles 1 L wit-l1 rods 15 that are anchored, as at'16,within the sleepers 9 of the foundation or base. The guy wires 10 and 11diverge upwardly from the anchors at the lower end of each leg 7 tovertically spaced points of the adjacent legs, and by tightening theturnbuckles 14, the wires 10 and 11 are rendered taut, so that they willexert a downward pull on the derrick at different vertical pointsthereof. This will hold the derrick down on the base or foundation, toresist the pressure of high winds that tend to blow the derrick over.The downward pull on the derrick distributed to different verticalpoints of the derrick, so that the compression strains on the derrickfrom the guy wires may be distributed throughout the height of thederrick to prevent buckling of the derrick, and to render the structuremore substantial. The guy wires not only exert downward pulling force onthe derrick at different altitudes thereof, but also have a tendency fordrawing the legs 7 toward one another, thereby keeping the braces 8under compression strains to resist the structure being blown apart bystrong winds.

Having thus described the invention, what is claimed as new is:-

1. The combination with a derrick including a foundation, legs risingfrom the foundation, and braces connecting said legs, of anchorsembedded in said foundation at the lower ends of the legs, and guy wiresc011- nected to said anchors and having portions embracing said legs atdifferent heights of the derrick inunediately above said braces, saidwires crossing one another at the different sides of the derrick and.being disposed in substantially the same planes wit-h said sides.

2. The combination with a derrick including a foundation, legs risingfrom said foundation, and braces connecting said legs, of anchorsembedded in said foundation at the Hall legs at vertically spacedpoints, and the wires of the pairs crossing one another at the differentsides of the derrick. 10

In testimony whereof I hereunto ufiix my signature.

GEORGE B. MULLEN.

